Finding the Fourth Proportional to 12,558.22, 18,853.71 and 10,622.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,558.22 : 18,853.71 = 10,622.71 : x
2. Step 2: Convert to fraction form
   12,558.22/18,853.71 = 10,622.71/x
3. Step 3: Cross multiply
   12,558.22x = 18,853.71 × 10,622.71
4. Step 4: Simplify right side
   12,558.22x = 200,277,493.75
5. Step 5: Solve for x
   x = 200,277,493.75/12,558.22
6. Step 6: Final answer
   x = 15,947.92